CN110096029A - Thermal displacement correction device - Google Patents
Thermal displacement correction device Download PDFInfo
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- CN110096029A CN110096029A CN201910089695.8A CN201910089695A CN110096029A CN 110096029 A CN110096029 A CN 110096029A CN 201910089695 A CN201910089695 A CN 201910089695A CN 110096029 A CN110096029 A CN 110096029A
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- thermal
- thermal walking
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/404—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/408—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35408—Calculate new position data from actual data to compensate for contour error
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49204—Control of heat to compensate for dilatation, thermal displacement
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/49—Nc machine tool, till multiple
- G05B2219/49207—Compensate thermal displacement using measured distance
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- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Automatic Control Of Machine Tools (AREA)
- Numerical Control (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The present invention provides a kind of thermal displacement correction device, even also can continue to high-precision thermal displacement correction in the case that failure has occurred in the operative sensor in multiple sensors.Thermal displacement correction device includes sensor information acquisition unit, obtains the temperature for the lathe that sensor detects and the state of sensor；Thermal walking estimates method storage unit, stores multiple thermal walkings and estimates method；Thermal walking estimates method choice portion, and the thermal walking of the heat displacement amount for estimating lathe is selected to estimate method according to the state of sensor；And thermal walking presumption unit, method is estimated according to the thermal walking that thermal walking presumption method choice portion is selected, the heat displacement amount of lathe is estimated according to the temperature of lathe.
Description
Technical field
The present invention relates to thermal displacement correction devices, even sending out more particularly to the operative sensor in multiple sensors
In the case where having given birth to failure, the thermal displacement correction device of high-precision thermal displacement correction also can continue to.
Background technique
As the technology of correction thermal walking as caused by the fever of lathe, there are following technologies: using multiple temperature sensing
Device monitors the state of lathe, and each portion of lathe is estimated according to the state of temperature in each portion of the lathe detected by each temperature sensor
Heat displacement amount.
Under the FA environment of factory, since what is generated when the cutting fluid used in lathe or workpieces processing cuts the originals such as powder
Cause is easy to generate exception in sensor etc. compared to common use environment, temperature used in thermal displacement correction is passed
Sensor is also the same.In the case that temperature sensor produces exception in machine tool running, it is each can not accurately to estimate lathe
The heat displacement amount in portion.
Under such circumstances, in the prior art, it is being determined as temperature sensor generation abnormal time point, by forbidding
(for example, No. 5336042 bulletin of patent) is coped in the methods of change of correcting value for correcting thermal walking.
Using above-mentioned existing method, the thermal walking of the output according to abnormal temperature sensor is not implemented
Correction.In other words, after prohibiting the change of correcting value, the school of the thermal walking according to mechanical action state etc. is not implemented
Just.Therefore, the low such problems of product quality generation processed.Under such circumstances, stop machine at the time of appropriate
The operating of bed, maintenance produce abnormal temperature sensor, thus carry out the recovery of situation.But due to stopping lathe
It will lead to productive reduction when operating, therefore, it is desirable to which one kind is even if in the case where being that temperature sensor produces exception
The method that can continue accurately to estimate thermal walking.
Summary of the invention
Therefore, even the purpose of the present invention is to provide operative sensor of the one kind in multiple sensors, and event has occurred
Also it can continue to the thermal displacement correction device of high-precision thermal displacement correction in the case where barrier.
Thermal displacement correction device of the invention is used when temperature sensor generates abnormal, wherein thermal displacement correction dress
Multiple thermal walkings presumption method that thermal walking can be estimated with the detected value without using more than one temperature sensor is set,
When temperature sensor generates abnormal, selection does not use and produces abnormal temperature sensor from multiple thermal walking presumption methods
The thermal walking of detected value estimate method, make using the thermal walking presumption method selected and the thermal displacement correction that continues become can
Can, the above subject is solved as a result,.
Also, one embodiment of the present invention provides a kind of thermal displacement correction device, the machine detected according to multiple sensors
The temperature of bed, to estimate the heat displacement amount of the lathe, wherein the thermal displacement correction device includes sensor information acquisition unit,
Obtain the temperature for the lathe that the sensor detects and the state of the sensor；Thermal walking estimates method storage unit,
The state of itself and the sensor stores multiple thermal walking presumption methods in association；Thermal walking estimates method choice portion, from
Multiple thermal walking presumption methods of the thermal walking presumption method storage unit are stored in, are obtained according to the sensor information
Portion obtain the sensor state come select the heat displacement amount for estimating the lathe thermal walking estimate method；And
Thermal walking presumption unit estimates method according to the thermal walking that thermal walking presumption method choice portion is selected, according to the biography
The temperature for the lathe that sensor information acquiring section obtains estimates the heat displacement amount of the lathe.
Through the invention, it even in the case where temperature sensor produces exception, can continue to implement thermal walking
Presumption and correction, carry out while cycle time can not be reduced the presumption and correction of thermal walking with a high credibility.
Detailed description of the invention
The explanation of following embodiment by referring to accompanying drawing can specify described and other purposes and feature of the invention.
In these figures:
Fig. 1 is the outline hardware structure diagram for indicating the major part of the thermal displacement correction device in first embodiment.
Fig. 2 is the outline functional block diagram of the thermal displacement correction device in first embodiment.
Fig. 3 A is the exemplary figure for indicating to be stored in the thermal walking presumption method of thermal walking presumption method storage unit.
Fig. 3 B is the exemplary figure for indicating to be installed on the sensor of lathe.
Fig. 4 A is the left side view for indicating to be installed on the exemplary lathe of sensor of lathe.
Fig. 4 B is the right side view for indicating to be installed on the exemplary lathe of sensor of lathe.
Fig. 5 is the outline functional block diagram for indicating the thermal displacement correction device in second embodiment.
Specific embodiment
Hereinafter, being illustrated together to attached drawing and embodiments of the present invention.
Fig. 1 is the outline hardware structure diagram for indicating the major part of the thermal displacement correction device in first embodiment.Heat
Displacement correction device 1 is for example installed as the control device of control lathe.In addition, thermal displacement correction device 1 is also installed as being attached to
The PC of the control device of lathe, the unit computer connecting via network with control device, master computer, cloud is controlled to take
The computers such as business device.Fig. 1 shows the example for being installed as the thermal displacement correction device 1 of control device of control lathe.
The CPU11 that thermal displacement correction device 1 in present embodiment has is the place of whole control thermal displacement correction device 1
Manage device.CPU11 reads the system program for being stored in ROM12 via bus 20, controls thermal displacement correction according to the system program
Device 1 is whole.Interim calculating data or display data, operator are temporarily stored in RAM13 through not shown input unit
The various data etc. of input.
Nonvolatile memory 14 is configured to such as being backed up by battery (not shown), and even if disconnects thermal walking
The power supply of means for correcting 1 can still keep the memory of storage state.It is stored in nonvolatile memory 14 and is read via interface
The control program entered or the control program through inputs such as not shown input units are obtained from lathe 2 or sensor 3
Various data etc..The control program for being stored in nonvolatile memory 14 can also be unfolded in RAM13 when utilizing.This
Outside, various system programs needed for the movement of thermal displacement correction device 1 are previously written in ROM12.
Thermal displacement correction device 1 exports what control lathe 2 had to lathe 2 via interface 18 according to control program etc.
The instruction of each axis.In addition, thermal displacement correction device 1 obtains data from each portion of lathe 2 via interface 18.
In addition, thermal displacement correction device 1 obtains the 3 (example of sensor for being installed on 2 periphery of lathe or each portion via interface 19
Such as, temperature sensor etc.) data that detect.In addition, sensor 3 only shows 1 in Fig. 1, and actually in each of lathe 2
Portion is equipped with multiple sensors 3, thermal displacement correction device 1 be configured to can to obtain data that each sensor 3 detects (hereinafter,
In each for indicating multiple sensors 3, be expressed as sensor 3a, 3b, 3c ...).
Fig. 2 is the outline functional block diagram of the thermal displacement correction device 1 in first embodiment.Pass through thermal displacement correction device
The 1 CPU11 executive system routine having controls the movement in each portion of thermal displacement correction device 1, is achieved in shown in Fig. 2 each
Each function of functional block.
The thermal displacement correction device 1 of present embodiment includes sensor information acquisition unit 30, thermal walking presumption method choice
Portion 31, thermal walking presumption method storage unit 32, thermal walking presumption unit 33 and control unit 34.Sensor information acquisition unit 30 takes
Obtain the temperature in each portion of lathe 2 that each sensor 3 detects and the state of each sensor 3.It is pre- that thermal walking estimates method storage unit 32
First storage thermal walking estimates method.Each sensing that thermal walking presumption method choice portion 31 is obtained according to sensor information acquisition unit 30
The state of device 3, from the thermal walking presumption method choice of thermal walking presumption method storage unit 32 is pre-stored within for carrying out thermal potential
The thermal walking of the presumption of shifting estimates method.The thermal potential that thermal walking presumption unit 33 is selected according to thermal walking presumption method choice portion 31
Presumption method is moved to carry out the heat displacement amount of the lathe 2 of the temperature in each portion of lathe 2 obtained based on sensor information acquisition unit 30
Presumption.Control unit 34 is deduced according to the control program and thermal walking presumption unit 33 that are stored in nonvolatile memory 14
The heat displacement amount of lathe 2 controls the movement of lathe 2.
The acquirement of sensor information acquisition unit 30 is installed on each portion of lathe 2 detected by multiple sensors 3 in each portion of lathe 2
Temperature.In addition, sensor information acquisition unit 30 also obtains the state for being installed on each sensor 3 in each portion of lathe 2.Sensor letter
The state for ceasing each sensor 3 that acquisition unit 30 obtains includes the information as being operating normally whether sensor 3.Such as by making
With to such as electrical connection in abnormal state (for example, detect broken string, potential state be not common potential state etc.),
Sensor 3 shows impossible temperature value (for example, sensor shows the temperature, poor compared with other sensors 3 not detected usually
Different big value etc.) as the well known inspection method that is checked of state obtain the state of sensor 3.Sensor information takes
Portion 30 is obtained by the state output of the temperature in each portion of lathe 2 obtained in this way and sensor 3 to thermal walking presumption unit 33 and thermal walking
Estimate method choice portion 31.
The state for each sensor 3 that thermal walking presumption method choice portion 31 is obtained according to sensor information acquisition unit 30, comes
Select the presumption method of the thermal walking of lathe 2.Thermal walking presumption method storage unit 32 is stored in advance several in multiple sensors 3
Sensor 3 produces used multiple thermal walking presumptions method (for example, calculating formula of heat displacement amount) when exception.Thermal walking pushes away
Method choice portion 31 is determined when operative sensor 3 generates abnormal, from the multiple heat for being stored in thermal walking presumption method storage unit 32
Selection can estimate the heat displacement amount of lathe 2 without using the detected value for producing abnormal sensor 3 in displacement presumption method
Thermal walking estimate method.Thermal walking estimates method choice portion 31 and exports the thermal walking presumption selected to thermal walking presumption unit 33
Method.
Fig. 3 A indicates the example for the thermal walking presumption method for being stored in thermal walking presumption method storage unit 32, and Fig. 3 B indicates peace
The example of sensor 3 loaded on lathe 2.In the example shown in Fig. 3 A and Fig. 3 B, in thermal walking presumption method storage unit 32
It is stored with the calculating formula of multiple heat displacement amounts associated with the state of sensor 3.The calculating of heat displacement amount illustrated by Fig. 3 A
Formula is that multiple sensor 3a, 3b, 3c, 3d, 3e ... temperature detected are set to T for calculating1、T2、T3、T4、T5... when
Lathe 2 X-axis heat displacement amount △ x formula.In addition, merely illustrating the X-axis for calculating lathe 2 in the example shown in Fig. 3 A
Heat displacement amount △ x formula, but when lathe 2 also has multiple axis such as Y-axis, Z axis, for each axis, the meter of heat displacement amount
Formula estimates method as thermal walking and the state of sensor 3 stores in association.The state of sensor 3 in Fig. 3 A indicates more
(alternatively, which sensor is not available) can be used in which sensor in a sensor (3a, 3b, 3c, 3d, 3e ...).Scheming
In example shown in 3A and Fig. 3 B, thermal walking presumption is stored in as thermal walking presumption method in the calculating formula of multiple heat displacement amounts
In the state of method storage unit 32, if receiving the temperature in each portion of lathe 2 and the shape of each sensor 3 from sensor information acquisition unit 30
State, then the calculating formula for the heat displacement amount that thermal walking presumption method choice portion 31 is chosen so that according to the state of each sensor 3,
The calculating formula for the heat displacement amount selected is exported to thermal walking presumption unit 33.For example, working as the meter of heat displacement amount shown in Fig. 3 A
When formula is stored in thermal walking presumption method storage unit 32, in the case where sensor 3a is in abnormality, selection is stored as
The calculating formula of the heat displacement amount of No.2.In addition, having used such thermal potential illustrated in Fig. 3 A as thermal walking presumption method
In the case where the calculating formula of shifting amount, for the coefficient (α of each calculating formula1、α2、α3、α4、α5、β2、β3、β4、β5、γ1、γ4、γ5、
Deng) if etc. can first pass through in advance experiment etc. find out.
Thermal walking presumption unit 33 estimates method according to the thermal walking that thermal walking presumption method choice portion 31 is selected, according to biography
The temperature in each portion of lathe 2 acquired by sensor information acquiring section 30 estimates the heat displacement amount of lathe 2, which is exported
To control unit 34.
Control unit 34 is according to when being stored in the control of nonvolatile memory 14 with program and controlling each axis of lathe 2, root
Correct the position of each axis according to the presumed value of the heat displacement amount of each axis of lathe 2 received from thermal walking presumption unit 33, and according to
Result after correction controls the movement of each axis of lathe 2.
As a variation of thermal displacement correction device 1, thermal walking is selected to push away in thermal walking presumption method choice portion 31
When determining method, in the case where multiple thermal walking presumption methods can be selected under current state, with higher under current state
Precision estimates method to select to estimate the thermal walking of the heat displacement amount of lathe 2.
For example, as illustrated in Fig. 4 A and Fig. 4 B, in the number for the sensor 3 (sensor 3a~3i) for being installed on lathe 2
When amount increases, the quantity for being stored in the thermal walking presumption method of thermal walking presumption method storage unit 32 also increases.By being directed to machine
Tool symmetrically setting unit sensor 3 and good effect is brought to the presumption of heat displacement amount.For example, for mechanical left
When the right side is symmetrically arranged sensor 3e and sensor 3j, it is assumed that in sensor 3j (detected value T10) generate exception.In this case, hot
Displacement presumption method choice portion 31 and selection have used the detected value T of all sensors 3a~3i1~T9Thermal walking estimate method
It compares, selection uses other than the sensor 3e pairs of with sensor 3j, the detected value of sensor 3a~3d, 3f~3i
Thermal walking estimates method, but thermal walking presumption unit 33 can estimate the heat displacement amount of lathe 2 sometimes with higher precision.This
Outside, there is also the difference according to the structure of lathe 2, the flexible of section components caused by temperature change is affected to predetermined shaft
And the case where other axis are not influenced etc..Therefore, thermal walking presumption method choice portion 31 can also according to the structure of lathe 2,
The configuration of sensor 3, the axis for estimating heat displacement amount etc. are with higher precision, never using detecting abnormal sensor 3
Selection can estimate the thermal walking presumption method of heat displacement amount in the thermal walking presumption method of detected value, rather than simply choose
Full utilization be currently able to using the thermal walking of temperature that detects of sensor 3 estimate method.
The method for selecting thermal walking presumption method as thermal walking presumption method choice portion 31 in this variation, such as can
To carry out cis-position sequence to thermal walking presumption method used when generating abnormal in advance, according to the cis-position for having carried out cis-position sequence
Thermal walking is selected to estimate method by thermal walking presumption method choice portion 31.When sensor 3 generates exception according to using each thermal potential
The precision for the thermal walking that presumption method calculates is moved to carry out cis-position sequence.Thermal walking estimates method choice portion 31 never using production
The high thermal walking of selection cis-position estimates method in the thermal walking presumption method of the detected value of raw abnormal sensor 3.Cis-position row
Sequence can will for example estimate the axis of heat displacement amount and different according to thermal walking presumption unit 33.
In addition, alternatively method, thermal walking presumption method choice portion 31, which can choose, to be calculated and temperature sensing
The thermal displacement correction method of the immediate heat displacement amount of the heat displacement amount deduced when device is normal.All by using sensor 3
The heat that the thermal displacement correction method of the detected value of the temperature and all the sensors 3 that are detected when normal by each sensor 3 deduces
Displacement is pre-stored within certain storage devices as record data.When temperature sensor generates abnormal, thermal walking presumption unit
33 pairs do not use each of multiple thermal walking presumption methods of detected value of sensor 3 for generating exception to carry out being based on depositing
Storage is the presumption of the heat displacement amount of the fine motion data of the record data, and thermal walking presumption method choice portion 31 selects to calculate afterwards
The thermal displacement correction side of the immediate thermal walking of heat displacement amount deduced out with the detected value that uses all temperature sensors
Method.
Also, alternatively method, when temperature sensor generates it is abnormal when by the measuring devices such as touch probe come
It measures heat displacement amount and obtains measured value, the multiple thermal walkings presumption for producing the detected value of abnormal sensor 3 is being not used
In method, thermal walking presumption method choice portion 31 can select to calculate the heat with the immediate result of result of actual measurement afterwards
Displacement correction method.
As other variations of thermal displacement correction device 1, the thermal walking presumption side of multiple thermal walking presumption methods is stored
Method storage unit 32 can be managed by computers such as unit computer, master computer, Cloud Servers on network.It is being installed on
When the quantity of the sensor 3 of lathe 2 is more, the quantity for being stored in the thermal walking presumption method of thermal walking presumption method storage unit 32 becomes
It is more, oppress the memory of thermal displacement correction device 1.Therefore, thermal walking presumption method is managed on the server etc., via network
It obtains thermal walking and estimates method, thus mitigate the data for the memory being stored on thermal displacement correction device 1.In addition, these are counted
According to can also be shared via network and other thermal displacement correction devices 1.
Fig. 5 is the outline functional block diagram of the thermal displacement correction device 1 in second embodiment.The thermal walking of present embodiment
Means for correcting 1 also includes thermal walking presumption method optimization portion 35 relative to the thermal displacement correction device 1 of first embodiment,
It generates thermal walking presumption method or optimizes thermal walking presumption method；And record data store 36, store thermal potential
Data needed for moving the generation of presumption method or optimizing.
Thermal walking presumption method optimization portion 35 is to generate thermal potential using the information for being stored in record data store 36
Shift correction method or the functional unit for optimizing thermal displacement correction method.Preparatory standard is stored in record data store 36
Record data that are standby or obtaining during being processed using lathe 2.Record data for example may be embodied in sensor
The temperature in the 3 each portions of lathe 2 all detected using lathe 2 come sensor 3 when being processed in the state of regular event and
The thermal walking of the lathe 2 all gone out using the temperature estimation.In addition, record data for example can also comprising using lathe 2 come into
When row processing, the temperature in each portion of lathe 2 that sensor 3 detects and the thermal walking measured by measuring devices such as touch probes
The measured value of amount.Thermal walking estimates method optimization portion 35 using these record data, carries out part without using sensor 3
The generation or optimization of the thermal walking presumption method of detected value.The thermal potential carried out as thermal walking presumption method optimization portion 35
The generation of presumption method or the example of optimization are moved, the calculating formula of heat displacement amount shown in Fig. 3 A is used as thermal walking presumption side
Method in the temperature in each portion of lathe 2 for detecting sensor 3 and passes through the measurement of the measuring devices such as touch probe as record data
When the measured value of heat displacement amount out is stored in record data store 36, as long as using the multivariable based on the record data point
Analysis the methods of come adjust each heat displacement amount calculating formula coefficient.In addition, thermal walking presumption method optimization portion 35 can be with
Carry out machine learning.That is, thermal walking estimates method optimization portion 35 by the way that the detected value of sensor 3 is set as defeated with heat displacement amount
Enter value and the coefficient of the calculating formula of heat displacement amount is set as to the learning model of output valve, uses the record data obtained in processing
Come export heat displacement amount calculating formula coefficient, the calculating formula of heat displacement amount is changed by the coefficient of output.
As the variation of the thermal displacement correction device 1 in second embodiment, the record data of storage record data are deposited
Storage portion 36 can be managed by computers such as unit computer, master computer, Cloud Servers on network.In order to suitably carry out
Thermal walking estimates the generation or optimization of method, a considerable amount of record data is needed, to oppress thermal displacement correction device 1
Memory.Therefore, data are recorded by management such as servers, obtains record data via network, mitigates be stored in thermal walking as a result,
The data volume of memory on means for correcting 1.
In addition, thermal displacement correction device 1 can also share these data via network and other thermal displacement correction devices 1.
More than, embodiments of the present invention are illustrated, but the present invention is not only defined in above embodiment
Example, can by suitably increase change implement in various ways.
For example, in the above-described embodiment, the example using 1 equation of n th order n is shown as thermal walking presumption method, but
It is that 2 equation of n th order n or 3 times can be used as thermal walking presumption method according to the difference of the configuration of the structure or sensor 3 of lathe 2
Equation etc., or the arithmetic expression using other height.In addition, estimating method as thermal walking, additionally it is possible to use neural network etc.
Machine learning device.When thermal displacement correction device 1 has enough performances, the configuration of structure or sensor 3 for lathe 2 makes
Method is estimated with the thermal walking for the presumption that can realize thermal walking with high precision, thus, it is possible to realize the higher thermal walking of trust property
Correction.
Further, since the thermal displacement correction device 1 of above-mentioned embodiment is the control device for being installed as control lathe 2
Therefore example has a control unit 34, but for example be installed as being attached to the PC of control device, via network and control
When the computers such as unit computer, master computer, the Cloud Server of device connection, control unit 34 may not be necessary structure.It should
In the case of, as long as thermal displacement correction device 1 realizes the thermal walking for sending lathe 2 to the control device with control unit 34
?.
In addition, in the above-described embodiment, thermal walking presumption method choice portion 31 is configured to that a thermal walking is selected to push away
Determine method, but after having selected multiple thermal walking presumption methods according to the state of current sensor 3, thermal walking presumption unit
33 heat displacement amount according to each for the multiple thermal walkings presumption method selected to calculate lathe 2, for calculated more
The heat displacement amount of a lathe 2 uses well known statistical method (for example, finding out other lathes 2 for removing maxima and minima
The average value etc. of heat displacement amount), it is possible thereby to estimate the heat displacement amount of lathe 2.
More than, embodiments of the present invention are illustrated, but the present invention is not limited to above embodiment
Example can be implemented in a manner of various other by increasing change appropriate.
Claims (7)
1. a kind of thermal displacement correction device, the temperature of the lathe detected according to multiple sensors estimates the thermal potential of the lathe
Shifting amount, which is characterized in that
The thermal displacement correction device includes
Sensor information acquisition unit obtains the temperature for the lathe that the sensor detects and the shape of the sensor
State；
Thermal walking estimates method storage unit, stores multiple thermal walking presumption methods in association with the state of the sensor；
Thermal walking estimates method choice portion, pushes away from the multiple thermal walkings for being stored in the thermal walking presumption method storage unit
Determine in method, is selected according to the state of the sensor of sensor information acquisition unit acquirement for estimating the lathe
Heat displacement amount thermal walking estimate method；And
Thermal walking presumption unit estimates method according to the thermal walking that thermal walking presumption method choice portion is selected, according to institute
The temperature of the lathe of sensor information acquisition unit acquirement is stated to estimate the heat displacement amount of the lathe.
2. thermal displacement correction device according to claim 1, which is characterized in that
The thermal displacement correction device also includes thermal walking presumption method optimization portion, carries out being stored in the thermal walking pushing away
Determine the optimization of the thermal walking presumption method of method storage unit or is stored in the thermal walking of the thermal walking presumption method storage unit
The generation of presumption method.
3. thermal displacement correction device according to claim 1 or 2, which is characterized in that
Cis-position sequence has been carried out to the thermal walking presumption method for being stored in the thermal walking presumption method storage unit,
When the state according to the sensor can select multiple thermal walking presumption methods, the thermal walking estimates method choice
Portion selects thermal walking to estimate method according to the cis-position that the cis-position sorts.
4. thermal displacement correction device according to claim 1 or 2, which is characterized in that
In the case where the abnormal state of the sensor, the thermal walking estimates method choice portion from the thermal walking presumption side
The record data obtained when can be normal according to the state in the sensor are selected in method come estimate in the record data
The thermal walking of the immediate heat displacement amount of the heat displacement amount for being included estimates method.
5. thermal displacement correction device according to claim 1 or 2, which is characterized in that
In the abnormality of the sensor, thermal walking presumption method choice portion is selected from the thermal walking presumption method
Select the thermal walking presumption side of each portion that can estimate and measure the lathe and the immediate heat displacement amount of heat displacement amount obtained
Method.
6. thermal displacement correction device according to any one of claims 1 to 5, which is characterized in that
The thermal walking presumption method is that the calculating formula of the heat displacement amount of the lathe is calculated according to the temperature of the lathe.
7. thermal displacement correction device according to any one of claims 1 to 5, which is characterized in that
The thermal walking presumption method is that the machine learning of the heat displacement amount of the lathe is exported according to the temperature of the lathe
Device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-015657 | 2018-01-31 | ||
| JP2018015657A JP6687650B2 (en) | 2018-01-31 | 2018-01-31 | Thermal displacement correction device and machine learning device |
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| Publication Number | Publication Date |
|---|---|
| CN110096029A true CN110096029A (en) | 2019-08-06 |
| CN110096029B CN110096029B (en) | 2021-09-28 |
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| US (1) | US11249454B2 (en) |
| JP (1) | JP6687650B2 (en) |
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| JP7098544B2 (en) * | 2019-01-21 | 2022-07-11 | オークマ株式会社 | Machine tool thermal displacement correction method and thermal displacement compensation device |
| CN109739182B (en) * | 2019-01-31 | 2020-06-16 | 大连理工大学 | Spindle thermal error compensation method insensitive to cooling system disturbance |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003094291A (en) * | 2001-09-27 | 2003-04-03 | Kanto Seiki Kk | Thermal displacement correction method and device for machine tool |
| CN101206146A (en) * | 2006-12-18 | 2008-06-25 | 大隈株式会社 | Method for detecting abnormality of temperature sensor in machine tool |
| CN101344783A (en) * | 2007-04-27 | 2009-01-14 | 因万西斯系统股份有限公司 | Self-validated measurement systems |
| CN102554693A (en) * | 2010-12-28 | 2012-07-11 | 大隈株式会社 | Thermal displacement correcting apparatus and method for a machine tool |
| CN105312962A (en) * | 2014-07-03 | 2016-02-10 | 发那科株式会社 | Controller for machine tool |
| CN106371404A (en) * | 2015-07-21 | 2017-02-01 | 发那科株式会社 | Thermal displacement compensation device for machine tool |
| CN106488828A (en) * | 2014-10-29 | 2017-03-08 | 山崎马扎克公司 | Possesses the lathe that thermal walking correction sets change device |
| CN107114008A (en) * | 2014-12-25 | 2017-08-29 | 富士机械制造株式会社 | Component mounter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5358002A (en) | 1976-11-05 | 1978-05-25 | Sanyo Kokusaku Pulp Co | Process for removing suspended material in sulphite pulp waste from broadleaf trees as raw material |
| JPH068107A (en) * | 1992-06-29 | 1994-01-18 | Hitachi Seiko Ltd | Thermal displacement compensation method for machine tool |
| JPH0775937A (en) | 1993-09-07 | 1995-03-20 | Sodick Co Ltd | Machine tool and control method thereof |
| JPH11114776A (en) * | 1997-10-13 | 1999-04-27 | Niigata Eng Co Ltd | Thermal displacement correcting device for machine tool |
| US7096159B2 (en) * | 2003-09-05 | 2006-08-22 | Siemens Corporate Research Corp. | System and method for detecting and excluding outlier sensors in sensor-based monitoring |
| JP6299184B2 (en) * | 2013-11-29 | 2018-03-28 | 株式会社ジェイテクト | Machine tool and machining control method in machine tool |
| US10757790B2 (en) * | 2016-06-10 | 2020-08-25 | Intel Corporation | Sensor hub apparatus and method for sensing ambient light and audio conditions |
-
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003094291A (en) * | 2001-09-27 | 2003-04-03 | Kanto Seiki Kk | Thermal displacement correction method and device for machine tool |
| CN101206146A (en) * | 2006-12-18 | 2008-06-25 | 大隈株式会社 | Method for detecting abnormality of temperature sensor in machine tool |
| CN101344783A (en) * | 2007-04-27 | 2009-01-14 | 因万西斯系统股份有限公司 | Self-validated measurement systems |
| CN102554693A (en) * | 2010-12-28 | 2012-07-11 | 大隈株式会社 | Thermal displacement correcting apparatus and method for a machine tool |
| CN105312962A (en) * | 2014-07-03 | 2016-02-10 | 发那科株式会社 | Controller for machine tool |
| CN106488828A (en) * | 2014-10-29 | 2017-03-08 | 山崎马扎克公司 | Possesses the lathe that thermal walking correction sets change device |
| CN107114008A (en) * | 2014-12-25 | 2017-08-29 | 富士机械制造株式会社 | Component mounter |
| CN106371404A (en) * | 2015-07-21 | 2017-02-01 | 发那科株式会社 | Thermal displacement compensation device for machine tool |
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| JP6687650B2 (en) | 2020-04-28 |
| JP2019130627A (en) | 2019-08-08 |
| DE102019101910A1 (en) | 2019-08-01 |
| US20190235471A1 (en) | 2019-08-01 |
| CN110096029B (en) | 2021-09-28 |
| US11249454B2 (en) | 2022-02-15 |
| DE102019101910B4 (en) | 2023-11-09 |
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